Moved the get_part_info function to a class member
Moved the get_part_info function to a class member

- Makes query_part_info easier to read
- Removes the pseudo-global distributors and currency vars

xesscorp/KiCost,hildogjr/KiCost,xesscorp/KiCost,hildogjr/KiCost,xesscorp/KiCost,hildogjr/KiCost